ZNB1108 Features: * Attic ladder * 350 lbs duty rating * 22-1/2"" x 54"" rough opening * Easy open/close with unique offset spring bar designed to lock ladder in either the up or down position * Heavy duty plate hinges bear on each other to avoid wood crushing, insures rigid structure * Steel rods inserted in bottom groove of wood steps increases step strength and tightens the step to side rail connection * Fully assembled ready to install * 8" 5"" to 10" 3"" floor to ceiling height range Color/Finish: * Select pine, grooved slip-resistant, flush steps and quality finished rails with eased edges Specifications: * High quality fir plywood door has a full width 90 wrap-around hinge that minimizes heat loss